EP4041969A1 - Switchgear cabinet having a switchgear cabinet door that comprises a door status sensor - Google Patents

Switchgear cabinet having a switchgear cabinet door that comprises a door status sensor

Info

Publication number
EP4041969A1
EP4041969A1 EP20761138.5A EP20761138A EP4041969A1 EP 4041969 A1 EP4041969 A1 EP 4041969A1 EP 20761138 A EP20761138 A EP 20761138A EP 4041969 A1 EP4041969 A1 EP 4041969A1
Authority
EP
European Patent Office
Prior art keywords
door
sensor
switch cabinet
magnetic field
cabinet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20761138.5A
Other languages
German (de)
French (fr)
Other versions
EP4041969B1 (en
Inventor
Sven Michael Laurösch
Markus Hain
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rittal GmbH and Co KG
Original Assignee
Rittal GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rittal GmbH and Co KG filed Critical Rittal GmbH and Co KG
Publication of EP4041969A1 publication Critical patent/EP4041969A1/en
Application granted granted Critical
Publication of EP4041969B1 publication Critical patent/EP4041969B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/081—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices the magnetic field is produced by the objects or geological structures
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/22—Means for operating or controlling lock or fastening device accessories, i.e. other than the fastening members, e.g. switches, indicators
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B65/00—Locks or fastenings for special use
    • E05B65/02—Locks or fastenings for special use for thin, hollow, or thin-metal wings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
    • H02B1/38—Hinged covers or doors
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B2047/0048—Circuits, feeding, monitoring
    • E05B2047/0067—Monitoring
    • E05B2047/0068—Door closed

Definitions

  • the invention is based on a switch cabinet with a switch cabinet door which closes the switch cabinet and which has a door lock that can be operated via a door handle, the switch cabinet door having a door status sensor which has a magnetic field sensor and which is set up to detect an open state of the switch cabinet door by means of a detected change in the magnetic field differentiate between the closed state of the control cabinet door.
  • a switch cabinet door with a switch cabinet door which closes the switch cabinet and which has a door lock that can be operated via a door handle
  • the switch cabinet door having a door status sensor which has a magnetic field sensor and which is set up to detect an open state of the switch cabinet door by means of a detected change in the magnetic field differentiate between the closed state of the control cabinet door.
  • the monitoring of the opening status of a door or a window is described, for example, in DE 102013220 176 Ai and in DE 102013205368 Ai. Similar sensor arrangements are also known from US 2003/0071739 Ai.
  • switch cabinets are often made entirely of steel, so that when the magnetic field sensor is attached to and in particular in the switch cabinet housing, it is not possible to reliably determine a measured change in the magnetic field of the monitored geomagnetic field.
  • the door status sensor By accommodating the door status sensor inside the door handle, it is achieved that the door status sensor is not recognizable from the outside on the switch cabinet housing, while it is coupled to the earth's magnetic field via the magnetically permeable area of the door handle in order to be able to detect a change in the magnetic field when the switch cabinet door is off a first opening state is pivoted into a second opening state, for example from a closed position to an open position.
  • the door handle can, for example, have a ferromagnetic base by means of which the door handle is placed on an outside of the switch cabinet door, for example attached to the outside of the switch cabinet door.
  • the door handle can furthermore have a cover between which and the base of the door status sensor is arranged.
  • the cover can have the magnetically permeable area and / or consist entirely of a magnetically permeable material.
  • the door handle can have a door handle body consisting essentially of a ferromagnetic material, in which the door status sensor with the magnetic field sensor is accommodated.
  • the door handle body can have a receptacle which is closed by a magnetically permeable cover to the surroundings of the door handle and in which at least the magnetic field sensor of the door status sensor or the entire door status sensor is accommodated.
  • the door handle can have a ferromagnetic swivel lever which can be pivoted relative to the control cabinet door, which in an open position swiveled away from the control cabinet door exposes a receptacle for the door handle, in which at least the magnetic field sensor of the door status sensor is received, and which covers the receptacle when the swivel lever is in one of the control cabinet door folded closed position.
  • the door handle can be a radio handle for the contactless locking and / or unlocking of the door handle.
  • the door handle can have a radio module arranged on a printed circuit board arranged in the interior of the door handle.
  • the door status sensor can be arranged on the same printed circuit board as the radio module.
  • the door status sensor can furthermore have a single-axis or multi-axis, for example a three-axis acceleration sensor, which is set up to switch the magnetic field sensor from a standby mode, in which the magnetic field sensor is inactive, to a run mode, in which the magnetic field sensor is activated to transfer a magnetic field change to the detection.
  • the magnetic field sensor can have a reed switch or be designed as such.
  • the switch cabinet can have a permanent magnet or a magnetizable sensor counterpart at a cabinet opening that can be closed by the switch cabinet door. In an open position of the control cabinet door, the magnetic field sensor can be removed from the permanent magnet or the magnetizable sensor counterpart, and in a closed position of the control cabinet door it can be brought closer to the permanent magnet or the magnetizable sensor counterpart.
  • the magnetic field sensor can have a Hall sensor and the switch cabinet can have a magnetic or magnetizable sensor counterpart, for example a switch cabinet frame, on a cabinet opening that can be closed by the switch cabinet door.
  • the switch cabinet can have a light reflector at a cabinet opening that can be closed by the switch cabinet door and the door status sensor can be a light-sensitive sensor that converts light into electrical energy when light falls, for example a photo element. Alternatively, an IR light barrier can be used.
  • control cabinet door Insofar as a control cabinet door is described in the preceding description, it does not necessarily have to be a door hinged on one side to the frame of the control cabinet in the classic sense, even if this represents the preferred embodiment of the invention. Rather, the invention can also be transferred to embodiments in which, for example, another flat part of the control cabinet is equipped with a door status sensor and a corresponding magnetic field sensor, for example to determine whether any flat part, for example a mounted side wall of the control cabinet, has been moved, for example the side wall would have to be dismantled from the switchgear cabinet frame so that, for example, in the event of a detected Sidewall a currentless circuit of a switchgear system accommodated in the switchgear cabinet can be initiated.
  • FIG. 1 shows an exemplary embodiment of a door handle
  • FIG. 2 shows a further exemplary embodiment of a door handle
  • FIG. 3 in a schematic representation of a switchgear cabinet according to a
  • FIG. 4 shows a detail of a horizontal cross section in the area of the door handle of the switch cabinet according to FIG. 3.
  • the door handle 3 shown in FIG. 1 is designed as a so-called door lock plate and has a cover 8 which can be mounted on a base 7.
  • a circuit board 13 is arranged on the base 7 and is completely covered by the cover 8 when the cover 8 is mounted on the base 7.
  • the main electrical functions of the door handle 3 are implemented on the circuit board 13, in particular also the door status sensor 6, in the present case in addition to a radio module 14 and a single or multi-axis acceleration sensor 15. All of the functional assemblies mentioned are implemented on the same circuit board 13 and can thus save space be housed inside the handle 3.
  • the door handle 3 is made of a plastic material which is magnetically permeable, therefore has a magnetic permeability which is in the range of 1. In this way, it is possible that the door status sensor 6 is installed in the interior of the door handle 3 to save space on the one hand, and on the other hand, due to the cover 8 having or forming the permeable area 9, can measure a change in the earth's magnetic field when the door moves from a first position to a second position is pivoted about a vertical axis, the door status sensor 6 with its magnetic field sensor 5 traverses a circular path. In principle, no absolute measurements of the earth's magnetic field, something of a field strength, are required to carry out a door status evaluation in the manner according to the invention.
  • the door status sensor 6 is calibrated to a closed position of the control cabinet door 2, so that any deviation in the measured geomagnetic field that exceeds a certain minimum deviation can be evaluated as a door status change, i.e. an at least partially open position of the control cabinet door 2.
  • FIG. 2 shows a further embodiment of a door handle 3.
  • This has a pivot lever 12 which can be pivoted in a plane which extends perpendicular to the plane of the control cabinet door.
  • the door handle 3 can have a body 10 which, for example, in its essential components, as is customary in generic door handles, can consist of a ferromagnetic material, for example steel or iron.
  • the door status sensor 6 (not visible) is received in the interior of the door handle 3, in particular in the lower part of the body 10.
  • the body 10 has the magnetically permeable area 9 at its lower end.
  • This can for example be designed as a cover 8 made of a plastic, for example polycarbonate, and otherwise have the same coloration as the body 10, so that the provision of the permeable area 9 in the lower part of the body 10 does not lead to any aesthetic or functional losses.
  • the door status sensor 6 is received in a receptacle 11 of the door handle 3, which is exposed when the pivot lever 12 is arranged in an open position pivoted away from the cabinet door 2, while the receptacle 11 is in the, for example likewise ferromagnetic pivot lever 12 is covered when the pivot lever 12 is in a closed position folded onto the switch cabinet door 2, as shown in FIG.
  • FIG. 3 shows a schematic representation of a switch cabinet 1 which has a switch cabinet frame 18 on which a plurality of flat parts are arranged, some of which are designed as switch cabinet doors 2 and accordingly have a door handle 3.
  • the switchgear cabinet 1 has additional flat parts that are not designed as doors, for example side walls or a roof plate.
  • FIG. 1 A detailed view of a horizontal cross section in the area of one of the two door handles 3 is shown in FIG. Accordingly, the door handle 3 is on an outside of the Cabinet door 2 mounted, the door status sensor 6 at least with its magnetic field sensor 5 or a reed switch 16 extending through the door 2 in order to determine a relative proximity of the door status sensor 6 to the sensor counterpart 17 on the inside of the cabinet 1.
  • the sensor counterpart 17 is mounted on a profile side of the switch cabinet frame 18 which faces the switch cabinet opening closed by the door element 2 and is arranged offset to the rear with respect to this.
  • a tubular door frame 19 is arranged on the inside of the door.
  • a mechanism of the door lock 4 that also extends on the inside of the door is arranged over the door handle 3, for example a push rod lock that is adjustable in the vertical direction.
  • a sealing element 20 seals the door 2 on the inside with respect to the frame 18 in its closed position.
  • the magnetic field sensor 5 of the door status sensor 6 is designed as a reed contact or has one, the use of a sensor counterpart 17 can be expedient.
  • the invention is not restricted to embodiments in which the door open status is determined by the detection of a sensor counterpart 17.
  • the invention should also include those embodiments in which the door status sensor, in particular the magnetic field sensor 5 of the door status sensor 6, uses the geomagnetic field as a reference for determining the door status and the determination of the door status sensor is essentially based on the detection of a change in the measured geomagnetic field is based. It is understandable that the last-mentioned embodiments, which refer to the earth's magnetic field, are only appropriate for statically installed switch cabinets and therefore cannot be used in particular for applications in means of transport such as trains or ships.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Remote Sensing (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Power Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Electromagnetism (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Patch Boards (AREA)
  • Lock And Its Accessories (AREA)
  • Casings For Electric Apparatus (AREA)
  • Distribution Board (AREA)

Abstract

The invention relates to a switchgear cabinet (1), comprising a switchgear cabinet door (2), which closes the switchgear cabinet (1) and has a door closure (4) to be actuated by means of a door handle (3), the switchgear cabinet door (2) comprising a door status sensor (6), which has a magnetic field sensor (5) and is designed to distinguishing an open state of the switchgear cabinet door (2) from a closed state of the switchgear cabinet door (2) by means of a sensed magnetic field change, characterized in that at least the magnetic field sensor (5) of the door status sensor (6) is held within the door handle (3) in a region (9) of the door handle (3) that is magnetically permeable with respect to the surroundings of the switchgear cabinet (1).

Description

Schaltschrank mit einer einen Türstatussensor aufweisenden Schaltschranktür Control cabinet with a control cabinet door having a door status sensor
Die Erfindung geht aus von einem Schaltschrank mit einer den Schaltschrank verschließenden Schaltschranktür, die einen über einen Türgriff zu betätigenden Türverschluss aufweist, wobei die Schaltschranktür einen einen Magnetfeldsensor aufweisenden Türstatussensor aufweist, der dazu eingerichtet ist, über eine erfasste Magnetfeldänderung einen geöffneten Zustand der Schaltschranktür von einem geschlossenen Zustand der Schaltschranktür zu unterscheiden. Die Überwachung des Öffnungsstatus einer Tür oder eines Fensters ist beispielsweise in der DE 102013220 176 Ai und in der DE 102013205368 Ai beschrieben. Ähnliche Sensoranordnungen sind auch aus der US 2003/0071739 Ai bekannt. The invention is based on a switch cabinet with a switch cabinet door which closes the switch cabinet and which has a door lock that can be operated via a door handle, the switch cabinet door having a door status sensor which has a magnetic field sensor and which is set up to detect an open state of the switch cabinet door by means of a detected change in the magnetic field differentiate between the closed state of the control cabinet door. The monitoring of the opening status of a door or a window is described, for example, in DE 102013220 176 Ai and in DE 102013205368 Ai. Similar sensor arrangements are also known from US 2003/0071739 Ai.
Die Übertragung der aus dem Stand der Technik bekannten Türstatussensoren unter Verwendung von Magnetfeldsensoren auf Schaltschränke ist nicht ohne weiteres möglich. Dies liegt insbesondere an zwei schaltschrankspezifischen Faktoren, einmal dem Umstand, dass die zusätzliche Anbringung von Geräten an der Außenhaut des Schaltschranks, insbesondere an der Schaltschranktür, aus ästhetischen, sicherheitstechnischen oder funktionalen Gründen unerwünscht ist. Zum anderen sind Schaltschränke häufig vollständig aus Stahl gefertigt, so dass bei der Anbringung des Magnetfeldsensors am und insbesondere im Schaltschrankgehäuse eine zuverlässige Ermittlung einer gemessenen Magnetfeldänderung des überwachten Erdmagnetfeldes nicht möglich ist. The transfer of the door status sensors known from the prior art to switch cabinets using magnetic field sensors is not easily possible. This is due in particular to two control cabinet-specific factors, one being the fact that the additional attachment of devices to the outer skin of the control cabinet, in particular to the control cabinet door, is undesirable for aesthetic, safety or functional reasons. On the other hand, switch cabinets are often made entirely of steel, so that when the magnetic field sensor is attached to and in particular in the switch cabinet housing, it is not possible to reliably determine a measured change in the magnetic field of the monitored geomagnetic field.
Es ist daher die Aufgabe der Erfindung, einen Schaltschrank der eingangs beschriebenen Art derart weiter zu entwickeln, dass er die Überwachung des Öffnungszustands einer Schaltschranktür mit Hilfe eines einen Magnetfeldsensor aufweisenden Türstatussensors erlaubt. It is therefore the object of the invention to further develop a switch cabinet of the type described at the outset in such a way that it allows the open state of a switch cabinet door to be monitored with the aid of a door status sensor having a magnetic field sensor.
Diese Aufgabe wird durch einen Schaltschrank mit den Merkmalen des Anspruchs 1 gelöst. Die abhängigen Ansprüche betreffen jeweils vorteilhafte Ausführungsformen der Erfindung. Demgemäß ist vorgesehen, dass zumindest der Magnetfeldsensor des Türstatussensors in einem zur Umgebung des Schaltschranks magnetisch durchlässigen Bereich des Türgriffs innerhalb des Türgriffs des Schaltschranks aufgenommen ist. This object is achieved by a switch cabinet with the features of claim 1. The dependent claims each relate to advantageous embodiments of the invention. Accordingly, it is provided that at least the magnetic field sensor of the door status sensor is accommodated in a region of the door handle that is magnetically permeable to the surroundings of the control cabinet within the door handle of the control cabinet.
Durch die Unterbringung des Türstatussensors im Innern des Türgriffs wird erreicht, dass der Türstatussensor von außen nicht erkennbar am Schaltschrankgehäuse untergebracht ist, während er über den magnetisch durchlässigen Bereich des Türgriffs mit dem Erdmagnetfeld gekoppelt ist, um eine Magnetfeldänderung erfassen zu können, wenn die Schaltschranktür von einem ersten Öffnungszustand in einen zweiten Öffnungszustand, beispielsweise von einer geschlossenen Position in eine geöffnete Position verschwenkt wird. By accommodating the door status sensor inside the door handle, it is achieved that the door status sensor is not recognizable from the outside on the switch cabinet housing, while it is coupled to the earth's magnetic field via the magnetically permeable area of the door handle in order to be able to detect a change in the magnetic field when the switch cabinet door is off a first opening state is pivoted into a second opening state, for example from a closed position to an open position.
Der Türgriff kann beispielsweise eine ferromagnetische Basis aufweisen, über die der Türgriff auf eine Außenseite der Schaltschranktür aufgesetzt ist, beispielsweise auf der Außenseite der Schaltschranktür befestigt ist. Der Türgriff kann weiterhin eine Abdeckung aufweisen, zwischen der und der Basis der Türstatussensor angeordnet ist. Dabei kann die Abdeckung den magnetisch durchlässigen Bereich aufweisen und/oder vollständig aus einem magnetisch durchlässigen Material bestehen. The door handle can, for example, have a ferromagnetic base by means of which the door handle is placed on an outside of the switch cabinet door, for example attached to the outside of the switch cabinet door. The door handle can furthermore have a cover between which and the base of the door status sensor is arranged. The cover can have the magnetically permeable area and / or consist entirely of a magnetically permeable material.
Der Türgriff kann einen im Wesentlichen aus einem ferromagnetischen Material bestehenden Türgriffkorpus aufweisen, in dem der Türstatussensor mit dem Magnetfeldsensor aufgenommen ist. Der Türgriffkorpus kann eine über eine magnetisch durchlässige Abdeckung zur Umgebung des Türgriffs verschlossene Aufnahme aufweisen, in der zumindest der Magnetfeldsensor des Türstatussensors oder der gesamte Türstatussensor aufgenommen ist. The door handle can have a door handle body consisting essentially of a ferromagnetic material, in which the door status sensor with the magnetic field sensor is accommodated. The door handle body can have a receptacle which is closed by a magnetically permeable cover to the surroundings of the door handle and in which at least the magnetic field sensor of the door status sensor or the entire door status sensor is accommodated.
Der Türgriff kann einen gegenüber der Schaltschranktür verschwenkbaren ferromagnetischen Schwenkhebel aufweisen, der in einer von der Schaltschranktür abgeschwenkten Offenstellung eine Aufnahme des Türgriffs, in der zumindest der Magnetfeldsensor des Türstatussensors aufgenommen ist, freiliegt und die Aufnahme verdeckt, wenn sich der Schwenkhebel in einer an die Schaltschranktür angeklappten Schließstellung befindet. The door handle can have a ferromagnetic swivel lever which can be pivoted relative to the control cabinet door, which in an open position swiveled away from the control cabinet door exposes a receptacle for the door handle, in which at least the magnetic field sensor of the door status sensor is received, and which covers the receptacle when the swivel lever is in one of the control cabinet door folded closed position.
Der Türgriff kann ein Funkgriff für die berührungslose Ver- und/oder Entriegelung des Türgriffs sein. Dazu kann der Türgriff ein auf einer im Innern des Türgriffs angeordneten Leiterplatine angeordnetes Funkmodul aufweisen. Der Türstatussensor kann auf derselben Leiterplatine wie das Funkmodul angeordnet sein. Der Türstatussensor kann weiterhin einen ein- oder mehrachsigen, beispielsweise einen dreiachsigen Beschleunigungssensor aufweisen, der dazu eingerichtet ist, bei einer erfassten Beschleunigung den Magnetfeldsensor aus einem Stand-by-Modus, in dem der Magnetfeldsensor inaktiv ist, in einen Run-Modus, in dem der Magnetfeldsensor aktiviert ist, zur Erfassung einer Magnetfeldänderung zu überführen.The door handle can be a radio handle for the contactless locking and / or unlocking of the door handle. For this purpose, the door handle can have a radio module arranged on a printed circuit board arranged in the interior of the door handle. The door status sensor can be arranged on the same printed circuit board as the radio module. The door status sensor can furthermore have a single-axis or multi-axis, for example a three-axis acceleration sensor, which is set up to switch the magnetic field sensor from a standby mode, in which the magnetic field sensor is inactive, to a run mode, in which the magnetic field sensor is activated to transfer a magnetic field change to the detection.
Der Magnetfeldsensor kann einen Reedschalter aufweisen oder als ein solcher ausgebildet sein. Der Schaltschrank kann an einer von der Schaltschranktür verschließbaren Schranköffnung einen Permanentmagneten oder ein magnetisierbares Sensorgegenstück aufweisen. Der Magnetfeldsensor kann in einer geöffneten Stellung der Schaltschranktür von dem Permanentmagneten oder dem magnetisierbaren Sensorgegenstück entfernt und in einer geschlossenen Stellung der Schaltschranktür dem Permanentmagneten oder dem magnetisierbaren Sensorgegenstück angenähert sein. The magnetic field sensor can have a reed switch or be designed as such. The switch cabinet can have a permanent magnet or a magnetizable sensor counterpart at a cabinet opening that can be closed by the switch cabinet door. In an open position of the control cabinet door, the magnetic field sensor can be removed from the permanent magnet or the magnetizable sensor counterpart, and in a closed position of the control cabinet door it can be brought closer to the permanent magnet or the magnetizable sensor counterpart.
Der Magnetfeldsensor kann einen Hall-Sensor und der Schaltschrank an einer von der Schaltschranktür verschließbaren Schranköffnung ein magnetisches oder ein magnetisierbares Sensorgegenstück, beispielsweise ein Schaltschrankrahmengestell aufweisen. The magnetic field sensor can have a Hall sensor and the switch cabinet can have a magnetic or magnetizable sensor counterpart, for example a switch cabinet frame, on a cabinet opening that can be closed by the switch cabinet door.
Der Schaltschrank kann an einer von der Schaltschranktür verschließbaren Schranköffnung einen Lichtreflektor aufweisen und der Türstatussensor ein lichtempfindlicher und bei Lichteinfall Licht in elektrische Energie umwandelnder Sensor sein, beispielsweise ein Photoelement. Alternativ kann eine IR- Lichtschranke verwendet werden. The switch cabinet can have a light reflector at a cabinet opening that can be closed by the switch cabinet door and the door status sensor can be a light-sensitive sensor that converts light into electrical energy when light falls, for example a photo element. Alternatively, an IR light barrier can be used.
Soweit in der vorangegangenen Beschreibung eine Schaltschranktür beschrieben ist, so muss es sich dabei nicht zwangsläufig um eine einseitig am Rahmengestell des Schaltschranks anscharnierte Tür im klassischen Sinne handeln, auch wenn dies die bevorzugte Ausführungsform der Erfindung darstellt. Vielmehr kann die Erfindung auch auf Ausführungsformen übertragen werden, bei der beispielsweise ein anderes Flachteil des Schaltschranks mit einem Türstatussensor und einem entsprechenden Magnetfeldsensor ausgestattet ist, um beispielsweise zu ermitteln, ob ein beliebiges Flachteil, beispielsweise eine montierte Seitenwand des Schaltschranks, bewegt wurde, wozu beispielsweise die Seitenwand von dem Schaltschrankrahmengestell demontiert werden müsste, so dass beispielsweise in dem Falle einer erfassten entfernten Seitenwand eine Stromlosschaltung einer in dem Schaltschrank aufgenommenen Schaltanlage initiiert werden kann. Insofar as a control cabinet door is described in the preceding description, it does not necessarily have to be a door hinged on one side to the frame of the control cabinet in the classic sense, even if this represents the preferred embodiment of the invention. Rather, the invention can also be transferred to embodiments in which, for example, another flat part of the control cabinet is equipped with a door status sensor and a corresponding magnetic field sensor, for example to determine whether any flat part, for example a mounted side wall of the control cabinet, has been moved, for example the side wall would have to be dismantled from the switchgear cabinet frame so that, for example, in the event of a detected Sidewall a currentless circuit of a switchgear system accommodated in the switchgear cabinet can be initiated.
Weitere Einzelheiten der Erfindung werden anhand der nachstehenden Figuren erläutert. Dabei zeigt: Further details of the invention are explained with reference to the following figures. It shows:
Figur l eine beispielhafte Ausführungsform eines Türgriffs; FIG. 1 shows an exemplary embodiment of a door handle;
Figur 2 eine weitere beispielhafte Ausführungsform eines Türgriffs; FIG. 2 shows a further exemplary embodiment of a door handle;
Figur 3 in schematischer Darstellung einen Schaltschrank gemäß einerFigure 3 in a schematic representation of a switchgear cabinet according to a
Ausführungsform der Erfindung; und Embodiment of the invention; and
Figur 4 ein Detail eines Horizontalquerschnitts im Bereich des Türgriffs des Schaltschranks gemäß Figur 3. FIG. 4 shows a detail of a horizontal cross section in the area of the door handle of the switch cabinet according to FIG. 3.
Der in Figur 1 gezeigte Türgriff 3 ist als ein sogenanntes Türschlossschild ausgebildet und weist eine Abdeckung 8 auf, die auf einer Basis 7 montiert werden kann. Auf der Basis 7 ist eine Platine 13 angeordnet, welche bei auf der Basis 7 montierter Abdeckung 8 vollständig von der Abdeckung 8 verdeckt ist. Auf der Platine 13 sind die wesentlichen elektrischen Funktionen des Türgriffs 3 realisiert, insbesondere auch der Türstatussensor 6, vorliegend zusätzlich zu einem Funkmodul 14 und einem ein- oder mehrachsigen Beschleunigungssensor 15. Sämtliche der genannten funktionalen Baugruppen sind auf derselben Platine 13 realisiert und können somit platzsparend im Innern des Griffs 3 untergebracht werden. The door handle 3 shown in FIG. 1 is designed as a so-called door lock plate and has a cover 8 which can be mounted on a base 7. A circuit board 13 is arranged on the base 7 and is completely covered by the cover 8 when the cover 8 is mounted on the base 7. The main electrical functions of the door handle 3 are implemented on the circuit board 13, in particular also the door status sensor 6, in the present case in addition to a radio module 14 and a single or multi-axis acceleration sensor 15. All of the functional assemblies mentioned are implemented on the same circuit board 13 and can thus save space be housed inside the handle 3.
Der Türgriff 3 ist aus einem Kunststoffmaterial ausgebildet, welches magnetisch durchlässig ist, mithin eine magnetische Permeabilität aufweist, die im Bereich von 1 liegt. Auf diese Weise ist es möglich, dass der Türstatussensor 6 einerseits platzsparend im Innern des Türgriffs 3 verbaut ist, andererseits aufgrund der den durchlässigen Bereich 9 aufweisenden oder diesen bildenden Abdeckung 8 eine Veränderung des Erdmagnetfeldes messen kann, wenn die Tür aus einer ersten Lage in eine zweite Lage um eine vertikale Achse verschwenkt wird, wobei der Türstatussensor 6 mit seinem Magnetfeldsensor 5 eine Kreisbahn durchläuft. Grundsätzlich sind keine absoluten Messungen des Erdmagnetfelds, etwas einer Feldstärke, erforderlich, um eine Türstatusauswertung in erfindungsgemäßer Weise durchzuführen. Beispielsweise kann bei einer Erstinstallation des Türgriffes 3 vorgesehen sein, dass der Türstatussensor 6 auf eine geschlossene Position der Schaltschranktür 2 kalibriert wird, so dass jede Abweichung des gemessenen Erdmagnetfeldes, die eine gewisse Mindestabweichung übersteigt, als eine Türstatusveränderung ausgewertet werden kann, mithin eine zumindest teilweise Offenstellung der Schaltschranktür 2. The door handle 3 is made of a plastic material which is magnetically permeable, therefore has a magnetic permeability which is in the range of 1. In this way, it is possible that the door status sensor 6 is installed in the interior of the door handle 3 to save space on the one hand, and on the other hand, due to the cover 8 having or forming the permeable area 9, can measure a change in the earth's magnetic field when the door moves from a first position to a second position is pivoted about a vertical axis, the door status sensor 6 with its magnetic field sensor 5 traverses a circular path. In principle, no absolute measurements of the earth's magnetic field, something of a field strength, are required to carry out a door status evaluation in the manner according to the invention. For example, when the door handle 3 is installed for the first time, it can be provided that the door status sensor 6 is calibrated to a closed position of the control cabinet door 2, so that any deviation in the measured geomagnetic field that exceeds a certain minimum deviation can be evaluated as a door status change, i.e. an at least partially open position of the control cabinet door 2.
Die Figur 2 zeigt eine weitere Ausführungsform eines Türgriffs 3. Dieser weist einen Schwenkhebel 12 auf, der in einer Ebene verschwenkt werden kann, die sich senkrecht zu der Schaltschranktürebene erstreckt. Der Türgriff 3 kann einen Korpus 10 aufweisen, der beispielsweise in seinen wesentlichen Bestandteilen, wie dies bei gattungsgemäßen Türgriffen üblich ist, aus einem ferromagnetischen Material, beispielsweise Stahl oder Eisen bestehen kann. Auch bei dieser Ausführungsform ist der Türstatussensor 6 (nicht erkennbar) im Innern des Türgriffs 3, insbesondere im unteren Teil des Korpus 10 aufgenommen. Um eine magnetische Abschirmung des Sensors 6 in Innern des Korpus 10 zu vermeiden, weist der Korpus 10 an seinem unteren Ende den magnetisch durchlässigen Bereich 9 auf. Dieser kann beispielsweise als eine Abdeckung 8 aus einem Kunststoff, beispielsweise Polycarbonat, ausgebildet sein und im Übrigen dieselbe Einfärbung wie der Korpus 10 aufweisen, so dass die Bereitstellung des durchlässigen Bereichs 9 im unteren Teil des Korpus 10 zu keinen ästhetischen und funktionalen Einbußen führt. FIG. 2 shows a further embodiment of a door handle 3. This has a pivot lever 12 which can be pivoted in a plane which extends perpendicular to the plane of the control cabinet door. The door handle 3 can have a body 10 which, for example, in its essential components, as is customary in generic door handles, can consist of a ferromagnetic material, for example steel or iron. In this embodiment too, the door status sensor 6 (not visible) is received in the interior of the door handle 3, in particular in the lower part of the body 10. In order to avoid magnetic shielding of the sensor 6 inside the body 10, the body 10 has the magnetically permeable area 9 at its lower end. This can for example be designed as a cover 8 made of a plastic, for example polycarbonate, and otherwise have the same coloration as the body 10, so that the provision of the permeable area 9 in the lower part of the body 10 does not lead to any aesthetic or functional losses.
Alternativ kann bei der Ausführungsform gemäß Figur 2 vorgesehen sein, dass der Türstatussensor 6 in einer Aufnahme 11 des Türgriffs 3 aufgenommen ist, welche freiliegt, wenn der Schwenkhebel 12 in einer von der Schaltschranktür 2 abgeschwenkten Offenstellung angeordnet ist, während die Aufnahme 11 von dem beispielsweise ebenfalls ferromagnetischen Schwenkhebel 12 verdeckt ist, wenn sich der Schwenkhebel 12 in einer an die Schaltschranktür 2 angeklappten Schließstellung befindet, wie dies in Figur 2 gezeigt ist. Alternatively, in the embodiment according to FIG. 2, it can be provided that the door status sensor 6 is received in a receptacle 11 of the door handle 3, which is exposed when the pivot lever 12 is arranged in an open position pivoted away from the cabinet door 2, while the receptacle 11 is in the, for example likewise ferromagnetic pivot lever 12 is covered when the pivot lever 12 is in a closed position folded onto the switch cabinet door 2, as shown in FIG.
Die Figur 3 zeigt in schematischer Darstellung einen Schaltschrank 1, der ein Schaltschrankrahmengestell 18 aufweist, an dem eine Mehrzahl Flachteile angeordnet sind, die zum Teil als Schaltschranktüren 2 ausgebildet sind und demgemäß einen Türgriff 3 aufweisen. Darüber hinaus weist der Schaltschrank 1 zusätzliche Flachteile auf, die nicht als Türen ausgebildet sind, beispielsweise Seitenwände oder ein Dachblech. FIG. 3 shows a schematic representation of a switch cabinet 1 which has a switch cabinet frame 18 on which a plurality of flat parts are arranged, some of which are designed as switch cabinet doors 2 and accordingly have a door handle 3. In addition, the switchgear cabinet 1 has additional flat parts that are not designed as doors, for example side walls or a roof plate.
Eine Detailansicht eines Horizontalquerschnitts im Bereich eines der beiden Türgriffe 3 ist in Figur 4 gezeigt. Demgemäß ist der Türgriff 3 auf einer Außenseite der Schaltschranktür 2 montiert, wobei der Türstatussensor 6 zumindest mit seinem Magnetfeldsensor 5 bzw. einem Reedschalter 16 sich durch die Tür 2 hindurch erstreckt, um eine relative Annäherung des Türstatussensors 6 an das Sensorgegenstück 17 an der Innenseite des Schaltschranks 1 zu bestimmen. Insbesondere ist das Sensorgegenstück 17 an einer Profilseite des Schaltschrankrahmengestells 18 montiert, die der von dem Türelement 2 verschlossenen Schaltschranköffnung zugewandt und in Bezug auf diese nach hinter versetzt angeordnet ist. Des Weiteren ist an der Türinnenseite ein Türrohrrahmen 19 angeordnet. A detailed view of a horizontal cross section in the area of one of the two door handles 3 is shown in FIG. Accordingly, the door handle 3 is on an outside of the Cabinet door 2 mounted, the door status sensor 6 at least with its magnetic field sensor 5 or a reed switch 16 extending through the door 2 in order to determine a relative proximity of the door status sensor 6 to the sensor counterpart 17 on the inside of the cabinet 1. In particular, the sensor counterpart 17 is mounted on a profile side of the switch cabinet frame 18 which faces the switch cabinet opening closed by the door element 2 and is arranged offset to the rear with respect to this. Furthermore, a tubular door frame 19 is arranged on the inside of the door.
Über den Türgriff 3 ist eine sich ebenfalls an der Türinnenseite erstreckende Mechanik des Türverschlusses 4 angeordnet, beispielsweise ein in Vertikalrichtung verstellbarer Schubstangenverschluss. Über ein Dichtelement 20 ist die Tür 2 an der Innenseite gegenüber dem Rahmengestell 18 in seiner Schließstellung abgedichtet. Insbesondere dann, wenn der Magnetfeldsensor 5 des Türstatussensors 6 als ein Reedkontakt ausgebildet ist oder einen solchen aufweist, kann die Verwendung eines Sensorgegenstücks 17 zweckmäßig sein. A mechanism of the door lock 4 that also extends on the inside of the door is arranged over the door handle 3, for example a push rod lock that is adjustable in the vertical direction. A sealing element 20 seals the door 2 on the inside with respect to the frame 18 in its closed position. In particular, when the magnetic field sensor 5 of the door status sensor 6 is designed as a reed contact or has one, the use of a sensor counterpart 17 can be expedient.
Die Erfindung ist jedoch nicht auf Ausführungsformen beschränkt, bei denen der Türöffnungsstatus durch die Detektierung eines Sensorgegenstücks 17 ermittelt wird. Insbesondere soll die Erfindung auch solche Ausführungsformen umfassen, bei denen mit dem Türstatussensor, insbesondere mit dem Magnetfeldsensor 5 des Türstatussensors 6, das Erdmagnetfeld als Referenz für die Bestimmung des Türstatus herangezogen wird und die Ermittlung des Türstatussensors im Wesentlichen auf der Erfassung einer Änderung des gemessenen Erdmagnetfeldes beruht. Es ist verständlich, dass die zuletzt genannten Ausführungsformen, welche auf das Erdmagnetfeld Bezug nehmen, nur bei statisch verbauten Schaltschränken zweckmäßig sind und daher insbesondere nicht bei Anwendungen in Verkehrsmitteln wie Zügen oder Schiffen verwendet werden können. However, the invention is not restricted to embodiments in which the door open status is determined by the detection of a sensor counterpart 17. In particular, the invention should also include those embodiments in which the door status sensor, in particular the magnetic field sensor 5 of the door status sensor 6, uses the geomagnetic field as a reference for determining the door status and the determination of the door status sensor is essentially based on the detection of a change in the measured geomagnetic field is based. It is understandable that the last-mentioned embodiments, which refer to the earth's magnetic field, are only appropriate for statically installed switch cabinets and therefore cannot be used in particular for applications in means of transport such as trains or ships.
Die in der vorstehenden Beschreibung, in der Zeichnung sowie in den Ansprüchen offenbarten Merkmale der Erfindung können sowohl einzeln als auch in beliebiger Kombination für die Verwirklichung der Erfindung wesentlich sein. Bezugszeichenliste Schaltschrank Schaltschranktür Türgriff Türverschluss Magnetfeldsensor Türstatussensor Basis Abdeckung magnetisch durchlässiger Bereich Türgriffkorpus Aufnahme Schwenkhebel Leiterplatine Funkmodul Beschleunigungssensor Reedschalter Sensorgegenstück Schaltschrankrahmengestell Türrohrrahmen Dichtelement The features of the invention disclosed in the above description, in the drawing and in the claims can be essential for the implementation of the invention both individually and in any combination. LIST OF REFERENCE NUMERALS Control cabinet Control cabinet door Door handle Door lock Magnetic field sensor Door status sensor Base Cover magnetically permeable area Door handle body receptacle Swivel lever Printed circuit board Radio module Accelerometer Reed switch Sensor counterpart Switch cabinet frame Door tube frame Sealing element

Claims

Ansprüche: Expectations:
1. Schaltschrank (1) mit einer den Schaltschrank (1) verschließenden Schaltschranktür (2), die einen über einen Türgriff (3) zu betätigenden Türverschluss (4) aufweist, wobei die Schaltschranktür (2) einen einen Magnetfeldsensor (5) aufweisenden Türstatussensor (6) aufweist, der dazu eingerichtet ist, über eine erfasste Magnetfeldänderung einen geöffneten Zustand der Schaltschranktür (2) von einem geschlossenen Zustand der Schaltschranktür (2) zu unterscheiden, dadurch gekennzeichnet, dass zumindest der Magnetfeldsensor (5) des Türstatussensors (6) in einem zur Umgebung des Schaltschranks (1) magnetisch durchlässigen Bereich (9) des Türgriffs (3) innerhalb des Türgriffs (3) aufgenommen ist. 1. Switch cabinet (1) with a switch cabinet door (2) which closes the switch cabinet (1) and which has a door lock (4) to be operated via a door handle (3), the switch cabinet door (2) having a door status sensor (5) having a magnetic field sensor (5). 6), which is set up to distinguish an open state of the control cabinet door (2) from a closed state of the control cabinet door (2) via a detected change in the magnetic field, characterized in that at least the magnetic field sensor (5) of the door status sensor (6) in one to the surroundings of the control cabinet (1) magnetically permeable area (9) of the door handle (3) is added within the door handle (3).
2. Schaltschrank (1) nach Anspruch 1, bei dem der Türgriff (3) eine ferromagnetische Basis (7), über die der Türgriff (3) auf eine Außenseite der Schaltschranktür (2) aufgesetzt ist, und eine Abdeckung (8) aufweist, zwischen der und der Basis (7) der Türstatussensor (6) angeordnet ist, wobei die Abdeckung (8) den magnetisch durchlässigen Bereich (9) aufweist und/oder vollständig aus einem magnetisch durchlässigen Material besteht. 2. Switch cabinet (1) according to claim 1, in which the door handle (3) has a ferromagnetic base (7), via which the door handle (3) is placed on an outside of the switch cabinet door (2), and a cover (8), the door status sensor (6) is arranged between and the base (7), the cover (8) having the magnetically permeable area (9) and / or consisting entirely of a magnetically permeable material.
3. Schaltschrank (1) nach Anspruch 1 oder 2, bei dem der Türgriff (3) einen aus einem ferromagnetischen Material bestehenden Türgriffkorpus (10) aufweist, in dem der Türstatussensor (6) mit dem Magnetfeldsensor (5) aufgenommen ist, wobei der Türgriffkorpus (10) eine über eine magnetisch durchlässige Abdeckung (8) zur Umgebung des Türgriffs (3) verschlossene Aufnahme (11) aufweist, in der zumindest der Magnetfeldsensor (5) des Türstatussensors (6) aufgenommen ist. 3. Switch cabinet (1) according to claim 1 or 2, wherein the door handle (3) has a door handle body (10) consisting of a ferromagnetic material, in which the door status sensor (6) with the magnetic field sensor (5) is received, the door handle body (10) has a receptacle (11) closed by a magnetically permeable cover (8) to the surroundings of the door handle (3), in which at least the magnetic field sensor (5) of the door status sensor (6) is accommodated.
4. Schaltschrank (1) nach Anspruch 3, bei dem der Türgriff (3) einen gegenüber der Schaltschranktür (2) verschwenkbaren ferromagnetischen Schwenkhebel (12) aufweist, der in einer von der Schaltschranktür (2) abgeschwenkten Offenstellung eine Aufnahme (11) des Türgriffs (3), in der zumindest der Magnetfeldsensor (5) des Türstatussensors (6) aufgenommen ist, freilegt und die Aufnahme (11) verdeckt, wenn sich der Schwenkhebel (12) in einer an die Schaltschranktür (2) angeklappten Schließstellung befindet. 4. Switch cabinet (1) according to claim 3, in which the door handle (3) has a ferromagnetic pivot lever (12) which can be pivoted relative to the switch cabinet door (2) and which has a receptacle (11) of the door handle in an open position pivoted away from the switch cabinet door (2) (3), in which at least the magnetic field sensor (5) of the door status sensor (6) is received, exposes and covers the receptacle (11) when the pivot lever (12) is in a closed position folded onto the control cabinet door (2).
5. Schaltschrank (1) nach einem der vorangegangen Ansprüche, bei dem der Türgriff (3) ein Funkgriff für die berührungslose Ver- und/oder Entriegelung des Türgriffs (3) ist, wozu der Türgriff (3) ein auf einer im Innern des Türgriffs (3) angeordneten Leiterplatine (13) angeordnetes Funkmodul (14) aufweist, wobei der Türstatussensor (6) auf derselben Leiterplatine (13) wie das Funkmodul (14) angeordnet ist. 5. Switch cabinet (1) according to one of the preceding claims, wherein the door handle (3) is a radio handle for the contactless locking and / or unlocking of the door handle (3), including the door handle (3) on one inside the door handle (3) arranged circuit board (13) has arranged radio module (14), wherein the door status sensor (6) is arranged on the same circuit board (13) as the radio module (14).
6. Schaltschrank (1) nach einem der vorangegangen Ansprüche, bei dem der Türstatussensor (6) weiterhin einen ein-oder mehrachsigen Beschleunigungssensor (15) aufweist, der dazu eingerichtet ist, bei einer erfassten Beschleunigung den Magnetfeldsensor (5) aus einem deaktivierten Stand-by-Modus in einen aktivierten Modus zur Erfassung einer Magnetfeldänderung zu überführen. 6. Switchgear cabinet (1) according to one of the preceding claims, in which the door status sensor (6) furthermore has a single-axis or multi-axis acceleration sensor (15) which is set up to switch the magnetic field sensor (5) from a deactivated standing position when acceleration is detected. to transfer by mode into an activated mode for detecting a change in the magnetic field.
7. Schaltschrank (1) nach einem der vorangegangen Ansprüche, bei dem der Magnetfeldsensor (5) einen Reedschalter (16) aufweist. 7. Switch cabinet (1) according to one of the preceding claims, in which the magnetic field sensor (5) has a reed switch (16).
8. Schaltschrank (1) nach einem der vorangegangen Ansprüche, bei dem der Schaltschrank (1) an einer von der Schaltschranktür (2) verschließbaren Schranköffnung einen Permanentmagneten oder ein magnetisierbares Sensorgegenstück (17) aufweist, wobei der Magnetfeldsensor (5) in einer geöffneten Stellung der Schaltschranktür (2) von dem Permanentmagneten oder dem magnetisierbaren Sensorgegenstück (17) entfernt und in einer geschlossenen Stellung der Schaltschranktür (2) dem Permanentmagneten oder dem magnetisierbaren Sensorgegenstück (17) angenähert ist. 8. Switch cabinet (1) according to one of the preceding claims, in which the switch cabinet (1) has a permanent magnet or a magnetizable sensor counterpart (17) at one of the switch cabinet door (2) closable cabinet opening, the magnetic field sensor (5) in an open position the control cabinet door (2) is removed from the permanent magnet or the magnetizable sensor counterpart (17) and, in a closed position of the control cabinet door (2), is approached to the permanent magnet or the magnetizable sensor counterpart (17).
9. Schaltschrank (1) nach einem der vorangegangen Ansprüche, bei dem der Magnetfeldsensor (5) einen Hall-Sensor und der Schaltschrank (1) an einer von der Schaltschranktür (2) verschließbaren Schranköffnung ein magnetisches oder ein magnetisierbares Sensorgegenstück (17), beispielsweise ein Schaltschrankrahmengestell (18) aufweist. 9. Switch cabinet (1) according to one of the preceding claims, in which the magnetic field sensor (5) is a Hall sensor and the switch cabinet (1) has a magnetic or magnetizable sensor counterpart (17), for example at a cabinet opening that can be closed by the switch cabinet door (2) has a switch cabinet frame (18).
10. Schaltschrank (1) nach einem der vorangegangen Ansprüche, bei dem der Schaltschrank (1) an einer von der Schaltschranktür (2) verschließbaren Schranköffnung einen Lichtreflektor aufweist und der Türstatussensor (6) ein lichtempfindlicher und bei Lichteinfall Licht in elektrische Energie umwandelnder Sensor ist, beispielsweise ein Photoelement. 10. Switch cabinet (1) according to one of the preceding claims, in which the switch cabinet (1) has a light reflector on a cabinet opening that can be closed by the switch cabinet door (2) and the door status sensor (6) is a light-sensitive sensor that converts light into electrical energy when light falls , for example a photo element.
EP20761138.5A 2019-10-11 2020-08-13 Switchgear cabinet having a switchgear cabinet door that comprises a door status sensor Active EP4041969B1 (en)

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US11953644B2 (en) 2024-04-09
US20220390639A1 (en) 2022-12-08

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